SOLUTION: Solve each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 -2x - 10y= -20

Algebra ->  Trigonometry-basics -> SOLUTION: Solve each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 -2x - 10y= -20      Log On


   

Question 103107: Solve each of the following systems by addition. If a unique solution does not exist, state
whether the system is inconsistent or dependent.
x + 5y = 10
-2x - 10y= -20
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.+x+%2B++5y+=+10
2.-2x+-+10y=+-20
If you multiply equation (1) by -2 you get equation (2).
+-2%28x+%2B++5y%29+=+-20
+-2x+-10++y+=+-20
The equations are dependent.